Texas Instruments SNJ5417J

Overview

SNJ5417J from Texas Instruments is a military-grade hex buffer/driver IC with open-collector high-voltage outputs, designed for TTL-to-MOS level translation and driving high-current loads such as lamps or relays. It features 15 V maximum output breakdown voltage, 30 mA sink current capability per channel, 14 ns typical propagation delay, and operates across –55°C to +125°C. It is used in ruggedized industrial control and defense electronics where high-voltage interfacing and temperature resilience are required.

For engineers reviewing the SNJ5417J datasheet, SNJ5417J pinout, SNJ5417J application, or SNJ5417J equivalent, this page delivers verified technical context, precise package mapping, confirmed electrical specifications, real-world use cases, and validated alternative options - all grounded in TI's official SDLS032H production data sheet.

Technical Context

The SNJ5417J implements six independent non-inverting open-collector buffers (Y = A) with diode-clamped TTL-compatible inputs. Its output stage supports up to 15 V off-state voltage tolerance and sinks up to 30 mA per channel under recommended operating conditions (VCC = 4.5–5.5 V, TA = –55°C to +125°C).

It belongs to the SN54xx military logic family compliant with MIL-PRF-38535, with all parameters tested unless otherwise noted. Input clamping minimizes transmission-line effects, and typical power dissipation is 145 mW at 25°C.

Key Specifications

Pinout & Package

SNJ5417J is housed in a 14-pin Ceramic Dual In-line Package (CDIP-J), measuring 19.56 mm × 6.92 mm, with through-hole mounting and SNPB (tin-lead) lead finish. The package is RoHS-exempt and rated for military temperature range (–55°C to +125°C).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex buffer/driver applications.

Compared with SNJ5407J and SN5417J, SNJ5417J uniquely balances 15 V output robustness, full military qualification, and proven reliability in extended-temperature deployments - making it optimal for defense-critical signal buffering where voltage margin and certification both matter.

Availability

SNJ5417J is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, aerospace panel annunciator drivers, defense radar power sequencing, and ruggedized test equipment interface requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for SNJ5417J includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and high-reliability logic solutions, with over 50 years of innovation in military and industrial electronics.

SNJ5417J belongs to TI's SN54xx military logic family, engineered specifically for high-reliability applications demanding extended temperature operation, MIL-PRF-38535 compliance, and robust interfacing between TTL and higher-voltage systems.

FAQ

What is the maximum output voltage rating for SNJ5417J?

The SNJ5417J has a minimum output breakdown voltage of 15 V, meaning it can safely withstand up to 15 V on its open-collector outputs when in the OFF state. This rating is specified under absolute maximum conditions and ensures compatibility with 12 V systems and transient-tolerant industrial interfaces. Exceeding 15 V risks permanent damage to the output transistor structure of SNJ5417J.

Does SNJ5417J require external pull-up resistors on its outputs?

Yes, SNJ5417J requires external pull-up resistors on all six open-collector outputs (1Y–6Y) to establish defined HIGH logic levels. The device itself only sinks current; it cannot source. Typical pull-up values range from 1 kΩ to 10 kΩ depending on load capacitance and speed requirements. Without pull-ups, outputs remain electrically floating and undefined - a condition that must be avoided in any functional SNJ5417J circuit.

Is SNJ5417J pin-compatible with SN7417N?

Yes, SNJ5417J and SN7417N share identical 14-pin CDIP and PDIP footprints respectively, and have fully matched pin functions (1A–6A, 1Y–6Y, VCC, GND, NC). However, SNJ5417J uses a ceramic DIP (J) package rated for –55°C to +125°C and MIL-PRF-38535 qualification, while SN7417N uses plastic DIP (N) rated 0°C to +70°C. Their electrical specs differ only in temperature range and screening - not pinout or logic behavior.

What is the typical power dissipation of SNJ5417J at 25°C?

The typical power dissipation of SNJ5417J is 145 mW at TA = 25°C with all six outputs sinking 16 mA each under standard test conditions (VCC = 5 V). This value scales with output loading and ambient temperature; at maximum 30 mA per output and elevated temperature, dissipation increases significantly. Thermal design must account for the CDIP package's RθJA of approximately 52.1°C/W (per TI's SOIC/PDIP reference data, extrapolated conservatively for J-package).

Can unused inputs on SNJ5417J be left floating?

No, unused inputs on SNJ5417J must never be left floating. TI explicitly requires all unused inputs to be tied to either VCC or GND to prevent undefined logic states, increased power consumption, and potential oscillation. For SNJ5417J, tying unused inputs to VCC is preferred for consistency with TTL input biasing, though GND is acceptable if the application demands active-low default behavior. Floating inputs violate SNJ5417J's recommended operating conditions and risk system-level malfunction.